Surface ornamentation on a biscuit



FIG. 1 is a front elevational view of surface ornamentation on a biscuit showing my new design; and,

FIG. 2 is a front elevational view of a second embodiment of surface ornamentation on a biscuit showing my new design.

The broken lines shown in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a surface ornamentation on a biscuit, as shown and described. 